The Buhl Industries Mark IV Opus Opaque Overhead Projector is the ideal projector for non-transparent materials such as original paper documents, art, books, magazines and even thin 3-Dimensional solid objects. A newly redesigned illumination system with 4 ENX halogen reflectors (combining for 14,000 lumens output) enables sufficient light output even for presentations in daylight conditions. Hi-quality optical elements within the dedicated projection lens guarantee a perfect, sharp and bright picture every time. Unit elevation can be adjusted from five to 10 degrees. Standard features include an LED that indicates lamp failure, fine picture tuning adjustments and a special dust/slip cover to protect your investment.